Tag Archives: Evento scientifico

Several aspects of flavour physics, including the recent experimental “anomalies” in leptonic decays, are critically reviewed. New ideas to improve the accuracy of the theoretical predictions and future developments are discussed.

After reviewing the status of the recent experimental discrepancies in B-physics data, I show how these phenomena can be coherently explained by an extended gauge dynamics which closely mimics the structure of the standard model. A key role is played by a generalisation of the Cabibbo mixing which allows for sizeable effects in charged current quark-lepton transitions, while sufficiently suppressing quark-quark and lepton-lepton FCNC. The model is also consistent with direct searches at high-pT and provides a fully calculable framework to guide the early phase of the B-anomalies and predict correlations with new observables.

I will present an update about the present status of the various anomalies observed in B physics.

The BTF of the DAΦNE accelerator complex, in the Frascati National Laboratory of the INFN, is in operation since 2004 with an average of 200 beam-days and 25 groups/year. The doubling of the beam-line will allow increasing the access capability, as well as hosting long-term experiments in parallel with the test-beam activities. The activities ongoing for the upgrade of the facility are described.

Aim of the meeting: This informal meeting is intended for extensive discussions on phenomenological issues of mutual interest  between the participants: mainly flavor physics, but also axion phenomenology and dark sectors. A certain number of more formal seminars will be open to the general audience. On Wednesday 27/6, 2:30pm in “Aula Salvini” Prof. G. Martinelli (U. La Sapienza) will deliver the General Seminar: “Flavor Physics for Non-Experts: (a Theory) Overview”.  Speakers: Tuesday 26/6, 2.30pm:  Giuliano Panico (IFAE Barcellona) “Flavor and Compositeness”  Wednesday 27/6, 10:00am:  Federico Mescia (Barcellona Univ.) “Present status of B anomalies”  Wednesday 27/6, 11:00am:  Luca Di Luzio (Durham Univ.) “From 321 to 4321: a Cabibbo mechanism for leptoquarks”                                   GENERAL SEMINAR Wednesday June 27, 2:30pm Guido Martinelli (Università di Roma `La Sapienza’) “Flavor Physics for Non-Experts: (a Theory) Overview”  Several aspects of flavour physics, including the recent experimental “anomalies” in leptonic decays, are critically reviewed. New ideas to improve the accuracy of the theoretical predictions and future developments are discussed.

L’INFN e i Laboratori Nazionali di Frascati portano avanti una intensa attività di ricerca tecnologica i cui prodotti, oltre che nella ricerca fondamentale, trovano applicazione in diversi campi di interesse sia sociale che industriale. In questo ciclo di seminari, dedicati ognuno a tecnologie e infrastrutture di interesse per un determinato settore, i LNF vogliono continuare il dialogo aperto con altri Enti, Università, Istituzioni ed Imprese in occasione dell’Open Day Imprese a Giugno 2017.   !CHAOS (Control system based on Higly Abstracted and Open Structure) è una nuova infrastruttura software dedicata al controllo di impianti, applicabile a contesti altamente diversificati. !CHAOS è stato sviluppato ai Laboratori Nazionali di Frascati dell'INFN, sulla base dell'esperienza maturata nel campo del controllo degli acceleratori di particelle, utilizzando tecnologie software di punta mutuate dal mondo delle WEB Applications, dei motori di ricerca e dei Social Media. Coordina A.Stecchi Prossimi Seminari 2018 LNF e le tecnologie per lo Spazio: Laboratori di test e calibrazione – Ottobre 2018 Le tecnologie di magneti e vuoto: infrastrutture e servizi – Dicembre 2018

Precise measurements of the branching ratios (BRs) for the flavor-changing neutral current decays K -> pi nu anti-nu can provide unique constraints on CKM unitarity and, potentially, evidence for new physics. It is important to measure both decay modes, K+ -> pi+ nu anti-nu and KL -> pi0 nu anti-nu, since different new physics models affect the rates for each channel differently. For the charged channel, the NA62 experiment at the CERN SPS is currently collecting data and expects to measure the BR to within 10% by the end of LHC Run 3. For the neutral channel, the BR has never been measured. KOTO, an experiment at J-PARC, should have enough data for the first observation of the decay by 2021. We are designing the KLEVER experiment to measure BR(KL -> pi0 nu anti nu) to ~20% using a high-energy neutral beam at the CERN SPS starting in Run 4. The boost from the high-energy beam facilitates the rejection of background channels such as KL -> pi0 pi0 by detection of the additional photons in the final state. On the other hand, the layout poses particular challenges for the design of the small-angle vetoes, which must reject photons from KL decays escaping through the beam pipe amidst an intense background from soft photons and neutrons in the beam. Background from Lambda -> n pi0 decays in the beam must also be kept under control. Findings from our design studies will be presented, with an emphasis on the challenges faced and …

The doubly-charged scalar often appears in Standard Model extensions motivated by perturbative mechanisms for neutrino mass generation. After briefly reviewing the models, I will focus on the corresponding low-energy effective field theory, the current constraints from flavour physics and the matching at the electroweak scale. The second part of the seminar will examine the status of current searches at the LHC and the discovery potential of the HighLumi LHC and of future e+e-colliders. I will show how these different bounds from low- and high-energy physics combine in a coherent picture.

If any excess is observed at the LHC, it is crucial to identify as many properties of the new states as possible in order to embed them into models, or classes of models, of new physics and possibly rule out other scenarios. In this respect, focusing on a number of selected signatures, I will discuss perspectives about the characterisation of the spin of Dark Matter and the properties of new fermions with vector-like nature.

Quantum Complex Matter Rome – Frascati National Laboratory, June, 11-15 2018 (arrival day: June 10th ; departure day: June 16th)   Chairpersons Antonio Bianconi (RICMASS), Augusto Marcelli (LNF-INFN), Tomo Uemura (Columbia University)   Scientific Advisory Committee Gabriel Aeppli, Piers Coleman, Andrea Cavalleri, Andrei Chubukov, Seamus Davis, Albert Fert, Atushi Fujimori, Philip Kim, Gabi Kotliar, Masatoshi Imada, Yoshihiro Iwasa, Alessandra Lanzara, Sadamichi Maekawa, Giancarlo Strinati, Kees van der Beek, Valerii Vinokur, Xiao Dong Xu, Qikun Xue   International QCM2018 Conference joint with QCM2018 School QCM2018 will highlight recent advances in all major fields in quantum phenomena in complex condensed matter. This is a multi-purpose meeting of activities based on the Frontiers of Condensed Matter Physics (FCMP) lecture courses and selected topics of Superstripes conferences. Invited and leading contributed papers will focus on research sub-fields of correlated electron systems (superconductivity and magnetism, Mott transition, quantum criticality, multi-band Hubbard model, Lifshitz transitions), nano science (graphene, TMDC, QHE, topological and 2-d materials, Fano resonances), spintronics (Skyrmions, itinerant electron magnetism, spin current, magnetic memory), cold atoms (Hubbard Model, Feshbach Resonances, BEC-BCS crossover) and complex systems (Nanoscale phase separation) to promote discussions and collaboration among researchers of different sub-fields. The QCM 2018 conference is integrated with QCM 2018 School with Educational Courses for students and young researchers. The lecture contents of the course will be announced later. All invited speakers and participants are kindly invited and urged to register at the web-site at earliest convenience. The topics of interest, can be found on the web site. Full-text papers …